GCD of 661, 353, 764, 420 Calculator

Given Input numbers are 661, 353, 764, 420

In the factoring method, we have to find the divisors of all numbers

Divisors of 661 :

The positive integer divisors of 661 that completely divides 661 are.

1, 661

Divisors of 353 :

The positive integer divisors of 353 that completely divides 353 are.

1, 353

Divisors of 764 :

The positive integer divisors of 764 that completely divides 764 are.

1, 2, 4, 191, 382, 764

Divisors of 420 :

The positive integer divisors of 420 that completely divides 420 are.

1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420

GCD of numbers is the greatest common divisor

So, the GCD (661, 353, 764, 420) = 1.

Given numbers are 661, 353, 764, 420

The list of prime factors of all numbers are

Prime factors of 661 are 661

Prime factors of 353 are 353

Prime factors of 764 are 2 x 2 x 191

Prime factors of 420 are 2 x 2 x 3 x 5 x 7

The above numbers do not have any common prime factor. So GCD is 1

Given numbers are 661, 353, 764, 420

GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)

Apply this formula for all numbers.

Step1:

LCM(661, 353) = 233333

GCD(661, 353) = ( 661 x 353 ) / 233333

= 661 / 353

= 661

Step2:

LCM(1, 764) = 764

GCD(1, 764) = ( 1 x 764 ) / 764

= 1 / 764

= 1

Step3:

LCM(1, 420) = 420

GCD(1, 420) = ( 1 x 420 ) / 420

= 1 / 420

= 1

So, Greatest Common Divisor of 661, 353, 764, 420 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 327, 833, 770, 541
• GCD of 283, 994, 295, 935
• GCD of 688, 545, 509, 743
• GCD of 597, 703, 766, 636
• GCD of 433, 379, 189, 765

Given numbers are 661, 353, 764, 420
The greatest common divisor of numbers 661, 353, 764, 420 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 661, 353, 764, 420 is 1.

1. What is the GCD of 661, 353, 764, 420?

GCD of given numbers 661, 353, 764, 420 is 1

2. How to calculate the greatest common divisor of 661, 353, 764, 420?

We can find the highest common divisor of 661, 353, 764, 420 easily using the prime factorization method. Just list the prime factors of all numbers and pick the highest common factor which is the GCD of 661, 353, 764, 420 i.e 1.

3. How can I use the GCD of 661, 353, 764, 420Calculator?

Out the numbers 661, 353, 764, 420 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.